Medium

Cross-Site Scripting in Samsung Account

IdentifiersCVE-2025-58486CWE-79

CVE-2025-58486 is a cross-site scripting vulnerability in the Samsung Account application affecting Samsung Account versions prior to 15.5.01.1, including affected Samsung Galaxy S25 installations. The flaw is caused by improper validation of user-supplied data, allowing attacker-controlled input to be injected and executed as arbitrary script within the context of the current WebView. Public reporting associated with Pwn2Own and ZDI-26-224 indicates the issue can be triggered remotely against affected installations, does not require authentication, and results in script execution in the Samsung Account application context.

For your environment

Are you exposed to this one?

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker to execute arbitrary script in the context of the Samsung Account application's current WebView. This can expose application data available to that context, enable unauthorized actions on behalf of the user within the application session, and potentially support further device compromise depending on accessible interfaces and chained weaknesses. Reported scoring indicates low confidentiality, integrity, and availability impact, with user interaction required and no authentication needed.

Mitigation

If you can’t patch tonight, do this now.

Until the patch is applied, reduce exposure by limiting interaction with untrusted content or links that could be rendered by the Samsung Account application, restricting device access by untrusted users, and minimizing use of affected Samsung Account functionality in high-risk environments. Applying the vendor update is the primary mitigation.

Remediation

Patch, then assume compromise.

Upgrade Samsung Account to version 15.5.01.1 or later. Samsung has released an update to correct the vulnerability; affected devices should apply the vendor-provided patch as soon as possible.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Samsung ElectronicsAccountapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

2 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2025-58486

NVD

nvd.nist.gov/vuln/detail/CVE-2025-58486

MITRE CWE · CWE-79

cwe.mitre.org

Vendor Advisory

security.samsungmobile.com/serviceWeb.smsb?year=2025&month=12